"Today, we climbed through snow and cloud," he posted on Instagram. "The heat caused by the convection cycle triggered repeated small avalanches that would rumble over seracs obscured by a thick fog on either side.

A photographer captured the moment an avalanche on Mt. Everest barreled into a group of people.

"This day, and the mood that I was brining [sic] to it was reminiscent of a not so good day I had in the mountains several years ago when one of the distant rumbles became not so distant and engulfed my partners and I."

"the truth is the mountains are indiscriminate. They don't care.

"They shine when it is sunny and they fall when it is snowy.

"It's what we bring to them that defines our experience...and maybe even more important, its how we are changed by them and what we bring home and share that matters most."